The ratio of the inertial mass to gravitational mass is equal to which number?
First you should understand what is inertial mass and what is gravitational mass. ∴ according to Newton's law, F = ma , here a is acceleration and m is mass. it is valid only inertial frame of reference. if we get mass by this formula {m=aF} then, this mass is known as inertial mass} it is also application of Newton's law. But here we won't use Newton's law of motion. here we use gravitational law. according to Newton's gravitational law, F=r2GmM, if we get mass by this formula {m=GMFr2} then, it is known as gravitational mass. generally, inertial mass = gravitational mass so, ratio of inertial mass to gravitational mass = 1
